Vacuum cleaner



FIG. 1 is a perspective view of the vacuum cleaner showing our new design;

FIG. 2 is a perspective view of the vacuum cleaner with the dust box removed;

FIG. 3 is a plan top view thereof;

FIG. 4 is a plan bottom view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a front elevational view thereof; and

FIG. 8 is a rear elevational view thereof. 

The ornamental design for a vacuum cleaner, as shown and described. 